JPS6021937Y2 - Midmount More - Google Patents

Description

[Detailed description of the invention] This invention relates to a mid-mount mower, and the rear limit gauge wheel and the cutting height adjustment gauge wheel are placed inside the mower deck, and the amount of elevation is increased in the lower abdomen of the vehicle body. It is something.

2. Description of the Related Art Mid-mounted mowers are already well known, which are attached to the lower abdomen of a vehicle such as a tractor so as to be able to move up and down, and mowing lawns or the like as the vehicle moves.

In this type of mower, the mower deck is equipped with three sets of cutting blade bodies in the horizontal direction, and the central cutting blade body is positioned forward, and limit gauge wheels are installed at the front center and on both sides of the rear. Each gauge wheel is equipped in the center for adjusting the cutting height, but in the past, each gauge wheel was installed protruding from the front and rear of the mower deck. Due to their position, their waists interfere with each other, making it difficult to raise and lower the lower part of the tractor body, which has the drawback of limiting ground clearance.

Also, when attaching the mower to the lower abdomen of the tractor body,
The mower is inserted between the front and rear wheels from the lateral force direction toward the vehicle body, but at this time as well, each gauge wheel on the rear side comes into contact with the rear wheel, making insertion extremely difficult.

The purpose of this invention is to solve these conventional problems, and its features are that the mower deck is equipped with three sets of cutting blades in the horizontal direction, and the central cutting blade is A mid-mounted mower with its body positioned forward and equipped with limit gauge wheels on both front and rear sides, and gauge wheels for cutting height adjustment on both front and rear sides, respectively.
The point is that the rear limit gauge wheel and gauge wheel are installed inside the mower deck.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figures and FIG. 2, 1 is the tractor body, 2 is the front wheel,
3 is the rear wheel, 4 is the front wheel, 5 is the steering wheel, and 6 is the driver's seat.

Reference numeral 7 denotes a mounting frame for a working machine, which is provided on both sides of the tractor body 1 at approximately the center thereof.

Reference numeral 8 denotes a mid-mount mower disposed below the tractor body 1, and three sets of cutting blade bodies 10 are installed laterally on the mower deck 9.
are provided rotatably around the vertical shaft 11, and are configured in a two-row type with the central cutting blade body 10 positioned forward, and each cutting blade body 10 has a pulley 12 and a pulley 12 fixed to the vertical shaft 11. They are interlocked and connected to each other via a belt 13, and the central vertical shaft 11 connects to a gear case 16 provided at the rear center position of the mower deck 9 via a pulley 14 and a belt 15.
It is interlocked and connected to the pulley 17 of.

The gear case 16 has an input shaft 18 .
The universal joint shaft 2 is attached to the mid-PTO shaft 19 of the tractor body 1.
They are linked together via 0.

Reference numeral 21 denotes a pair of left and right bending link mechanisms for attaching the mower deck 9 to the tractor body 1 so as to be able to rise and fall freely, and a pair of front and rear upper links 22 and lower links 23 are connected in a bendable manner by a longitudinal connecting shaft 24. The upper link 22 and the lower link 23 are removably pivotally connected to the mounting frame 7 and the mower deck 9, respectively.

Reference numeral 25 denotes a guide plate for discharging grass, which is provided on the lower side of the mower deck 9 along the rotation locus on the rear side of each cutting blade body 10. has some space.

Reference numeral 27 denotes front gauge wheels for adjusting the cutting height, which are disposed at positions in front of both ends of the mower deck 9, and each is supported by the front end of the front arm 28 as a caster wheel structure.

The front arm 28 is vertically swingably supported by a pivot 31 on brackets 37 fixed to both ends of the mower deck 9, and an interlocking link 3 is attached to the base end of the front arm 28.
2 is provided facing downward.

Reference numeral 33 denotes a rear gauge wheel for adjusting the cutting height, which is arranged between the guide plate 25 and the rear cover 26 at the rear center of the mower deck 9, and this rear gauge wheel 33 is connected to the interlocking shaft as shown in FIG. The rear arms 35 are supported by a pair of rear arms 35 fixed to the mower deck 9.
It is inserted in 6.

The interlocking shaft 34 is disposed laterally at the rear of the mower main body 11, and at both ends thereof, interlocking links 37 are provided to protrude upward at the rear positions of the respective interlocking links 32. 37 is operatively connected to the interlocking link 32 via a connecting rod 38.

39 is an adjustment lever for adjusting the cutting height, and one connecting rod 39
It is located on the side and is pivotally supported by the guide plate 40 so as to be swingable back and forth, and is also connected to the connecting rod 38 so that it can be operated back and forth, and this adjustment lever 39 can be operated while the operator is seated in the driver's seat 6. It is operable.

Note that a means for positioning the adjustment lever 39 at the operating position is provided on the guide plate 40 side.

Reference numeral 41 denotes a front limit gauge wheel, which is located at a center front position of the mower deck 9 and is supported by a bracket 43 projecting from the front cover 42.

Reference numeral 44 denotes a rear limit gauge wheel, which is disposed between the guide plate 25 and the rear cover 26 on both rear sides, each of which has a rear cover 2 as shown in FIG.
It is supported by a bracket 45 that projects forward from 6.

The mower deck 9 can be raised and lowered by a hydraulic system at the rear of the tractor body 1 via a lifting wire.

According to the above configuration, when the mower 8 is attached to the tractor body 1, the mower 8 is inserted from the side between the front and rear wheels 2 and 3, but the rear gauge wheel 33 and the rear limit gauge wheel 44 are attached to the mower deck. 9, they do not interfere with the rear wheel 3 and can be easily inserted.

Further, even when the mower 8 is lifted, the rear limit gauge wheel 44 does not interfere with the rear wheel 3, so that the ground clearance of the mower 8 can be adjusted to a certain level.

Moreover, since these gauge wheels 33 and 44 are located behind the guide plate 25, there is no problem such as the cut grass getting tangled therewith.

Note that the cutting height can be adjusted by operating only the adjustment lever 39.

That is, when the adjustment lever 39 is operated back and forth, the connecting rod 38 moves in the front and back direction, and the front arm 28 and the rear arm 35 swing up and down around the pivot shaft 31 and the interlocking shaft 34, respectively, through the interlocking links 32 and 37. Therefore, the front gauge wheel 27 and the rear gauge wheel 33 move up and down relative to the mower deck 9.

Then, by locking the adjustment lever 39 at a position where the front gauge wheel 27 and the gauge wheel 33 are at a predetermined height, the adjustment of the cutting height is completed.

In this invention, each gauge wheel on the rear side is housed in the mower deck, so when inserting the mower laterally between the front and rear wheels of the vehicle body, or when lifting the mower attached to the vehicle body, these gauge wheels are Therefore, the mower can be easily attached to the lower abdomen of the vehicle body, and the mower can be raised and lowered by a large amount to ensure sufficient ground clearance.

[Brief Description of the Drawings] The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view, Fig. 3 is a cross-sectional view of the rear gauge wheel, and Fig. 4 is a partially cutaway side view. FIG. 3 is a cross-sectional view of the rear limit gauge ring. 1...Tractor body, 2...Front wheel, 3
... Rear wheel, 8 ... Mid-mount mower 9 ... Mower deck, 10 ... Cutting blade body, 27 ... Front gauge wheel , 38...
Rear gauge wheel, 41...Front limit gauge wheel, 4
4... Rear limit gauge wheel.

Claims (1)

[Scope of utility model registration request] The mower deck is equipped with three sets of cutting blades in the horizontal direction, with the central cutting blade positioned forward, limit gauge wheels on the front center and both sides of the rear, and cutting height adjustment on both front sides and the rear center. A mid-mount mower equipped with gauge wheels for each purpose, characterized in that a rear limit gauge wheel and a gauge wheel are provided inside the mower deck.